Amplified magnetic resonance imaging (aMRI)

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Samantha J HoldsworthMichael E Moseley

Abstract

This work describes a new method called amplified MRI (aMRI), which uses Eulerian video magnification to amplify the subtle spatial variations in cardiac-gated brain MRI scans and enables better visualization of brain motion. The aMRI method takes retrospective cardiac-gated cine MRI data as input, applies a spatial decomposition, followed by temporal filtering and frequency-selective amplification of the MRI cardiac-gated frames before synthesizing a motion-amplified cine data set. This approach reveals deformations of the brain parenchyma and displacements of arteries due to cardiac pulsatility, especially in the brainstem, cerebellum, and spinal cord. aMRI has the potential for widespread neuro- and non-neuro clinical use because it can amplify and characterize small, often barely perceptible motion and can visualize the biomechanical response of tissues using the heartbeat as an endogenous mechanical driver. Magn Reson Med 75:2245-2254, 2016. © 2016 Wiley Periodicals, Inc.

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Citations

May 31, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Itamar TeremSamantha J Holdsworth
Nov 30, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Stephan HahnThierry Metens
Sep 22, 2020·Brain Communications·Allen A ChampagneDouglas J Cook
Jul 17, 2020·Medical Devices : Evidence and Research·Barry Dixon, David B MacLeod
May 1, 2021·Journal of Neurosciences in Rural Practice·Sandhya MangaloreArun Kumar Gupta
May 6, 2021·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Itamar TeremSamantha J Holdsworth
Jul 17, 2021·Journal of the Mechanical Behavior of Biomedical Materials·E OzkayaM Kurt

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